The kidney has a 5 cm wide soft elasticated waistband for a comfortable fit around the waist, while the back is padded and mesh for quality ventilation.two large zippered pockets for storing all your essentials. There is a bottle pocket in the middle with additional loops for attaching the jacket and tail light. There are two straps on the bottom of the kidney to attach the knee pads.the phone pocket is positioned away from any potential shocks and is also waterproof.the RF logo is reflective for your safety when returning from a ride in the evening.